[PATCH v4 04/22] of: add function to allow probing a device from a OF node

[Mark Brown]

On Mon, Sep 07, 2015 at 02:23:29PM +0200, Tomeu Vizoso wrote:
> Walks the OF tree up and finds the closest ancestor that has a struct
> device associated with it, probing it if isn't bound to a driver yet.

> The above should ensure that the dependency represented by the passed OF
> node is available, because probing a device should cause its descendants
> to be probed as well (when they get registered).

I'm still not seeing how this works for MFDs where the MFD binding is
present directly in DT.
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